<!DOCTYPE html>
<html class="reftest-wait">
  <link rel='stylesheet' type='text/css' href='style.css'>
  <body onload="document.getElementById('i').checked = true;
                if (!document.getElementById('i').matches(':-moz-ui-valid')) {
                  document.body.textContent='FAIL';
                } else {
                  document.body.textContent='SUCCESS';
                }
                document.documentElement.className='';">
    <input id='i' type='radio' required>
  </body>
</html>
